diff options
| -rw-r--r-- | sound/core/ump.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/sound/core/ump.c b/sound/core/ump.c index c7c3581bbbbc..4502de891adf 100644 --- a/sound/core/ump.c +++ b/sound/core/ump.c @@ -657,6 +657,17 @@ static int ump_append_string(struct snd_ump_endpoint *ump, char *dest, format == UMP_STREAM_MSG_FORMAT_END); } +/* Choose the default protocol */ +static void choose_default_protocol(struct snd_ump_endpoint *ump) +{ + if (ump->info.protocol & SNDRV_UMP_EP_INFO_PROTO_MIDI_MASK) + return; + if (ump->info.protocol_caps & SNDRV_UMP_EP_INFO_PROTO_MIDI2) + ump->info.protocol |= SNDRV_UMP_EP_INFO_PROTO_MIDI2; + else + ump->info.protocol |= SNDRV_UMP_EP_INFO_PROTO_MIDI1; +} + /* handle EP info stream message; update the UMP attributes */ static int ump_handle_ep_info_msg(struct snd_ump_endpoint *ump, const union snd_ump_stream_msg *buf) @@ -678,6 +689,10 @@ static int ump_handle_ep_info_msg(struct snd_ump_endpoint *ump, ump_dbg(ump, "EP info: version=%x, num_blocks=%x, proto_caps=%x\n", ump->info.version, ump->info.num_blocks, ump->info.protocol_caps); + + ump->info.protocol &= ump->info.protocol_caps; + choose_default_protocol(ump); + return 1; /* finished */ } @@ -1040,12 +1055,7 @@ int snd_ump_parse_endpoint(struct snd_ump_endpoint *ump) ump_dbg(ump, "Unable to get UMP EP stream config\n"); /* If no protocol is set by some reason, assume the valid one */ - if (!(ump->info.protocol & SNDRV_UMP_EP_INFO_PROTO_MIDI_MASK)) { - if (ump->info.protocol_caps & SNDRV_UMP_EP_INFO_PROTO_MIDI2) - ump->info.protocol |= SNDRV_UMP_EP_INFO_PROTO_MIDI2; - else if (ump->info.protocol_caps & SNDRV_UMP_EP_INFO_PROTO_MIDI1) - ump->info.protocol |= SNDRV_UMP_EP_INFO_PROTO_MIDI1; - } + choose_default_protocol(ump); /* Query and create blocks from Function Blocks */ for (blk = 0; blk < ump->info.num_blocks; blk++) { |